You can install this very easily (P8H77-I, fresh freebsd 9.0 install):
1) download the three driver files:
if_re.cif_rl.cif_rlreg.h2) navigate to your download folder (or put it on a usb pen and navigate to that one)
3) copy files to the rght folder:
# cp if_re.c /usr/src/sys/dev/re/if_re.c
# cp if_rl.c /usr/src/sys/pci/if_rl.c
# cp if_rlreg.h /usr/src/sys/pci/if_rlreg.h
4) recompile your kernel:
# cd /usr/src/sys/i386/conf
# cp GENERIC GENERIC.org
# cd /usr/src
# make buildkernel KERNCONF=GENERIC
# make installkernel KERNCONF=GENERIC
# reboot
5) check if adaptor is present
# ifconfig
-> should show something like:
re0: ....
ether ....
inet ....
5) configurate your adaptor (easy dns config)
# ee /etc/rc.conf
6) add the following line:
# ifconfig_re0="DHCP"
7) save the file
# reboot